html, body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.chat-container {
    max-width: 900px;
    margin: 20px auto;
    height: calc(100vh - 40px);
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    text-align: center;
}

.chat-header h1 {
    margin: 0;
    font-size: 2em;
}

.subtitle {
    margin: 5px 0 0 0;
    font-size: 0.9em;
    opacity: 0.9;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f8f9fa;
}

.message {
    margin-bottom: 15px;
    padding: 12px 16px;
    border-radius: 12px;
    max-width: 80%;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    background: #667eea;
    color: white;
    margin-left: auto;
    text-align: right;
}

.message.assistant {
    background: white;
    color: #333;
    border: 1px solid #e0e0e0;
}

.message-role {
    font-weight: bold;
    font-size: 0.85em;
    margin-bottom: 5px;
    opacity: 0.8;
}

.message-content {
    line-height: 1.5;
    white-space: pre-wrap;
}

.typing-indicator {
    font-style: italic;
    color: #999;
}

.chat-input-container {
    display: flex;
    gap: 10px;
    padding: 20px;
    background: white;
    border-top: 1px solid #e0e0e0;
}

.chat-input {
    flex: 1;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1em;
    font-family: inherit;
    resize: none;
    transition: border-color 0.3s;
}

.chat-input:focus {
    outline: none;
    border-color: #667eea;
}

.chat-input:disabled {
    background: #f5f5f5;
    cursor: not-allowed;
}

.send-button {
    padding: 12px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.send-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.send-button:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 5px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}
